Please please help it due in an hour 1. A friend says there are two new moons during any given lunar cycle. Explain why you agree or disagree.
2. Calculate the number of days during any given lunar cycle when a waning crescent is visible. Show your work.
3. If a full moon is approximately Day 14 of the lunar cycle, what would the angle measure be for Day 22? Use your angle measure for a full moon to set up a proportion, and show your work and all units.

1. an enzyme is considered a(n) because it speeds up a chemical reaction without being used up.2. in a catalyzed reaction, a reactant is often called a(n) . an enzyme is specific because the shape of its matches only particular reactants.4. an enzyme speeds up reactions by lowering the . the between an active site and its substrate often strains bonds and the reaction proceed.6. a( , which is often a vitamin, binds to an enzyme and plays a role in catalysis.7. high temperatures or changes in ph can an enzyme, causing it to lose its shape and biological activity.